cloud engineer
Tomcat requires JRE.
wget jre-8uversion-linux-x64.tar.gz # or apt-get install default-jdk |
Install Tomcat 8 on Linux.
wget https://mirrors.gigenet.com/apache/tomcat/tomcat-8/v8.5.66/bin/apache-tomcat-8.5.66.tar.gz tar zxpvf apache-tomcat-8.5.66.tar.gz cd /opt/tomcat/apache-tomcat-8.5.66/bin/ ./startup.sh |
Status|Start|Stop|Restart Tomcat.
systemctl status tomcat8 systemctl start tomcat8 systemctl stop tomcat8 systemctl restart tomcat8 |
How to install syslog-np on Centos 7.
cd /tmp wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm yum -y reinstall ./epel-release-latest-7.noarch.rpm chattr +i /etc/yum.repos.d/epel* yum -y install syslog-ng |
Enable syslog-np. Disable rsyslog.
systemctl enable syslog-ng systemctl start syslog-ng yum -y erase rsyslog |
GCP recently added Instance Schedule to its console.
To configure, perform the following.
– Create an instance schedule.
– Add instance(s) to a schedule.
– If no errors, the service account has the correct permissions.
The service account used by Instance Schedule is owned by GCP and is not visible in the GCP console.
If service account has no permissions, the you must perform the following.
– Create a custom role with compute.instances.start and compute.instances.stop permissions.
– Add custom role to the service account.
Finally, validate instances are starting and stopping based on schedule.
If your /etc/resolv.conf keeps getting overwritten, take a look at /etc/NetworkManager/NetworkManager.conf. Set DNS to none.
[main] dns=none |
If you have trouble logging in (SSH) to your GCP instance, you may have to enable OS Login.
gcloud compute instances add-metadata server-name \ --metadata enable-oslogin=TRUE \ --zone us-central1-c \ --project project-id |
When done, you can set it back to FALSE.